Rooftop support base



FIG. 1 is a top perspective view of a rooftop support base;

FIG. 2 is a bottom perspective view of the rooftop support base;

FIG. 3 is a top view of the rooftop support base of FIG. 1:

FIG. 4 is a front view of the rooftop support base of FIG. 1, the rearside being identical;

FIG. 5 is a side view of the rooftop support base of FIG. 1, theopposite side being identical; and,

FIG. 6 is a bottom view of the rooftop support base of FIG. 1.

CLAIM The ornamental design for a rooftop support base, as shown anddescribed.